Stockton bartron



(No Model.)

S. BARTRON.

FRICTION GLUTGH. No. 313,644.

N Patented Mar. 10, 1 885.

,INVENTOR NlTE Starts arnrvr region.

STOCKTON BARTRON, OF PORTLAND, PENNSYLVANIA.

FRICTION-CLUTCH.

SPECIFICATION forming part of Letters Patent No. 313,6M, dated March 10,1885.

Application filed August 22, 1884.

To all whom it may concern:

Be it known that I, STOCKTON BARIRON, of Portland, in the county ofNorthampton and State of Pennsylvania, have invented a new and ImprovedFriction-Clutch, of which the following is a full, clear, and exactdescription.

My invention consists of an improved contrivance of expanding andcontracting frietion-segments carried on the side of a wheel fittedloosely on the shaft, in combination with the inner periphery of a rimor flange of a pulley or hoisting-drum keyed fast to the shaft, makingsimple and efficient friction devices for hoisting and other machinery,all as hereinafter fully described.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of referenee'indicatecorresponding parts in all the figures.

Figure 1 is asection of the shaft and side elevation ofmy improvedfriction-clutch. Fig.2 is a section of the clutch on the line 00 a" ofFig. 1. Fig. 3 is a section of the clutch on the line yg of Fig. 1.Fig.4. is a detail of the frictionrim and the devices for expanding andcontracting it. Fig. 5 is a detail of the contrivance for eonnectin gthe mechanism for expanding the friction-rim to the loose wheel, andFig. 6 is a detail of the contrivance for mount ing the friction-rim onthe loose wheel.

The drivingpulley a (or it may be a hoistingdrum or other device to bedriven) is designed to be keyed fast to the shaft 1), and has a flangeor rim, 0, to the inner periphery of which the sectional expandingfriction-rim cl, having wood faces 6, is fitted, so as to be ex pandedagainst the rim and slackened away fromit, said rim being connected bytongued lugs f, formed on er attached to it, with ra dially-grooved lugs9, east on arms h of the toothed wheel t, fitted loosely on the shaft1), the rim d being madein two segments of semicircular form, each ofwhich" has a connect ing-lug, f, at the middle, so that they areconnected to the wheel '5 by grooved lugs g, located opposite to eachother on the wheel, to be shifted radially and oppositely to each otherfor applying the clutch and detaching it.

The two segments of the friction-rim are (No model.)

jointed about midway between their ends and the center to extension-armsj, which are jointed to the sliding head k, tongued and grooved into abar, Z, supported by a couple of the arms h of the wheel i, andconnected by a link, on, with a sliding collar, n, fitted on the hub ofthe wheel 2', to be shifted forward and backward along the wheel-hub bya forked shipper, (not shown,) to expand and contract the friction-rimby thrusting out and drawing in the heads is radially in the manner tothrust out and pull back the arms j.

The arms j and sliding head 76 form togglejointed levers connecting thetwo segments 01 together, and the links at and'sliding collar a formtoggle-levers connecting the two toggle-lcversj k in a double-togglejointed meehanism adapted for thrusting out the frictionbrakes withgreat power. The collar a is connected by rods 0, extending through thewheel to a sliding collar, 1), on the shaft b,outside of the wheel, fora means of connecting the forked shipper to said collar n, which islocated between the wheel z and the pulley or drum a, where the shippercannot be connected directly to it.

The rims d have a flange, q, at each end, to hold the wood faces againstbeing forced around the rims more effectually than they can be rivetedonto the faces of the rims cl.

It is immaterial to the operation of the clutch whether the pulley a orthe wheel 2' be the driver.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. In a frictiolrcluteh, the expanding segmentalseetions having at their ends outwardly-projecting flanges or stops,whereby the frictional face-strips are held thereon, substantially asand for the purpose set forth.

2. The toggle devices j it", having support on the arms of the wheel 1'by bars Z, said devices or levers 7t and the bars Z being tongued andgrooved together, a11d said levers sliding or moving in a planetransversely to the length of said bars, in combination with theexpanding friction-rims d, also mounted on wheel 6, and theshipper-collar n, substantially as described.

3. The combination of the shipper-collar p and rods 0 with the collar n,located between the loose wheel 2' and the fast pulley a, and connectedwith the friction-rims d by toggle mechanism m and j k, said rods 0extending through the wheel i, substantially as described.

4. In a friction-clutch, the friction-rims d, combined with the rims cof the fast pulley, and connected to the loose wheel 2 by the radiallytongned and grooved lugs f 9, said tongucd lugs being formed upon leversk, and I0 said grooved lugs being made in bars I of the connection, andsaid friction-rims having means for expanding and contracting them,substantiallylas described.

STOCKTON BARTRON.

Witnesses:

J NO. BUZZARD, SAMUEL GooD.

